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Precision Mu Metal &
Magnetic Shielding
Solutions

Hongertech is a trusted global supplier of high-permeability Mu Metal cores, Permalloy laminations, and custom magnetic shielding components for current transformers, sensors, audio devices, and industrial power systems.

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About HongerTech

Invested by Honger Technology (HK) Limited, Jiangsu Hongyun Precision Industry Co., Ltd. is a high-tech enterprise specializing in the R&D and manufacturing of Permalloy / Mu Metal cores, laminations, shielding parts, and other advanced magnetic materials.

Our products are widely used in miniaturized, energy-saving electronic devices and power supply systems. As environmentally preferred materials, they serve electric power plants, sensor manufacturers, and high-end audio equipment producers.

Key features of our permalloys include high magnetic permeability, low coercive force, minimal magnetic loss, and excellent thermal stability—ideal for zero-phase current (ZCT) cores, leakage breakers, transformers, EI-cores, and magnetic shields.

Learn more about our capabilities →
80%

Nickel-Iron Alloy Content in Mu Metal

1J85

Standard Grade Mu Metal Strip

HMA

High Metering Accuracy Cores

CNC

Precision Machining & Stamping

Our Product Range

From raw Mu Metal strips to fully fabricated shielding cans and high-precision tape wound cores, we offer a complete line of magnetic components for sensitive applications.

High Metering Accuracy Current Transformer Mu Metal Core

HMA Current Transformer Core

High permeability 80% Ni-Fe Mu Metal alloy for precise metering with minimal ratio and phase angle error.

Tape Wound Core
NiFe-based Permalloy Clock Movement Stator

Clock Movement Stator

NiFe-based Permalloy stator with high vacuum demagnetization for lasting durability and precision timing.

Stamping Part
Deep Drawn Mu-metal Shielding Can

Deep Drawn Shielding Can

Protects sensitive circuits from parasitic magnetic fields in audio transformers and current sensors.

Shielding Can
Custom Fabricated Mu-metal Shields

Custom Fabricated Shields

Tailored magnetic shields for prototyping, sampling, and specialized industrial applications.

Custom
U-Shape Mu-metal Shield for Hall Sensor

U-Shape Hall Sensor Shield

Soft ferromagnetic shield with high linearity and very low hysteresis for precision sensing.

Shielding Series
NiFe-based Mu Metal Shielding Tube

Shielding Tube for CT

Prevents EMI in current transformers; dual-action protection from external and internal fields.

Shielding Tube
1J85 Mu Metal Strip

1J85 Mu Metal Strip

High initial permeability, low coercivity, minimal hysteresis and eddy current losses at low fields.

Raw Material
Nanocrystalline Cores

Nanocrystalline Cores

Ultra-high permeability, high saturation, low core loss—ideal for precision transformers.

Advanced Core
Mu Metal Shielding Case

Shielding Case / Box

Robust enclosure for protecting sensitive components from electromagnetic interference.

Shielding Case
Stacking Cores

Mu Metal Stacking Core

Made from 0.2–0.35mm Ni80 permalloy laminations; used in clamp meters and current sensors.

Stacking Core
Cut Cores

Mu Metal Cut Cores

Used in high-accuracy power measurement systems for energy monitoring and distribution.

Cut Core
Transformer Laminations

Mu Metal Laminations

Nickel-based alloy (Permalloy) laminations for high-end audio transformers and sensors.

Lamination

Why Choose HongerTech?

Our advanced manufacturing capabilities and strict quality control ensure reliable, high-performance magnetic components.

⚙️

CNC Machining & Stamping

High-speed precision stamping and CNC machining ensure tight tolerances and consistent quality across all parts.

🌀

Automatic Winding

Fully automated tape winding systems produce uniform, high-integrity tape wound cores with minimal defects.

🔬

Vacuum Demagnetization

High-vacuum demagnetization process enhances magnetic performance and ensures long-term stability.

80%

Nickel Content

1J85

Standard Grade

HMA

High Accuracy Cores

Global

Export Reach

Frequently Asked Questions

What is Mu Metal?

Mu Metal is a nickel-iron-molybdenum alloy (typically 80% Ni) known for its extremely high magnetic permeability and low coercivity, making it ideal for magnetic shielding and sensitive core applications.

What are the main applications of your Mu Metal cores?

Our cores are used in high metering accuracy current transformers, hall sensors, clamp ammeters, audio transformers, power inverters, and EMI/EMC shielding systems.

Do you offer custom magnetic shielding solutions?

Yes, we specialize in custom fabricated Mu-metal shields, including deep drawn cans, U-shields, and bent enclosures tailored to your design and prototyping needs.

What is the difference between tape wound and stacking cores?

Tape wound cores are made by winding thin Mu Metal strip into a toroid, offering high uniformity. Stacking cores are assembled from laminated sheets, ideal for specific sensor and metering applications.

How do you ensure quality control?

We use vacuum melting, precision stamping, automatic winding, and high-vacuum demagnetization, along with rigorous magnetic property testing to ensure consistency and performance.

Get in Touch

For product inquiries, technical specifications, or custom design support, reach out to our team.

Phone

13312903299

0517-88288066

Email

[email protected]

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